This achievement requires completing at least level 1 of each challenge with one character (location-specific challenges are not needed). Many will come through the course of normal play while some will require that you do certain things you may not have done as you played through the game.
If you want to reduce the amount of effort needed, I suggest using each weapon type for at least a little while as you play through the game to work towards many of these challenges.
To view your challenges, press
and use
to scroll the menu to "Badass Rank."
Not all challenges are available immediately. The following challenges are listed as (undiscovered) initially and only become available after meeting certain requirements in other challenges:
Enemies: The One That Says B.A.M.F.
Vehicle: All are (undiscovered) likely until you get access to a vehicle
Health and Recovery: Soup's Up, Had a Bit of a Shocker, The Phoenix, Rollin' the Ice
Rocket Launcher: Missile Magnet, Punker Buster, Hand of God, Collateral Damage
Sniper Rifle: Critical Reception, Penetrating Wound, Melon Splitter, Ol' Skool
Assault Rifle: Hot Lead Injection, Crouch Potato
Laser: Light 'Em Up
SMG: Dinky Death Dealer
Shotgun: Take It All, Overachiever, Shotty Workmanship
Pistol: Gunslinger, Magnum Maestro
Melee: Captain Cutty
Only two of these challenges took me any effort to "discover" as they required level 5 completion in another challenge: Overachiever became "discovered" after I got 750 point blank shotgun kills (level 5 in Take It All) and Missile Magnet became "discovered" after I got 200 splash damage rocket launcher kills (level 5 in Collateral Damage). I ended up grinding these two challenges in the first half of the Titan Industrial Facility where a lot of torks spawn. I suggest trying to focus on point-blank shotgun kills as you play through the game so you won't have to grind so many.
Conveniently, after I reached level 5 in Take It All and Collateral Damage, the newly "discovered" challenges had their progress retroactively updated so I didn't even have to work on them- they were already completed to level 1 or higher!
The rest of the initially (undiscovered) challenges became available for me through normal play without needing level 5 completion in something else. I don't have any other weapon challenges completed to level 5 so they may require completing another related challenge to level 1 or 2.
Most of the challenges are self-explanatory. Here is the list of level 1 requirement for each:
Low GravitySlampage!: Kill 5 enemies with slam attacks
Dragon Punch: Deal 5000 melee damage while in the air
Eagle Eye: Get 50 critical hits while in the air
Death from Above: Kill 50 enemies wile in the air
Roget Slamjet: Deal 2000 damage with slam attacks
Boosted: Perform 50 air boosts
GrinderMaster Chef: Discover 2 grinder recipes
Greater Than the Sum of its Parts: Obtain 20 Luneshine weapons from the Grinder
The Daily Grind: Perform 50 standard grinds
This Time for Sure: Perform 10 Moonstone grinds
EnemiesAim for the Little Ones: Kill 10 Opha's spawned Putti
Pest Control: Kill 25 torks
Takin' Out the Trash: Kill 5 tork badasses
That Was Unpleasant: Kill 25 shugguraths
Space Dead: Kill 25 scav outlaws
Die, Moon Jerks: Kill 75 scavs
It Wasn't Yours, Anyway: Kill 1 scav jet fighter
The One That Says B.A.M.F: Kill 10 scav badasses
Exterminator: Kill 25 rathyds
Gift That Keeps Giving: Kill 1 Swagman
Big Game Hunt: Kill 25 kraggons
Slayer of Titans: Kill 1 kraggon badass
Dose of Death: Kill 10 enemies infected with space hurps
Not So Tough Now: Kill 25 Eridian Guardians
More Where That Came From: Kill 2 Eridian Guardian bosses
No Suit For You!: Kill 10 Lost Legion powersuits
Get Some!: Kill 50 Lost Legion Infantry
Crash & Burn: Destroy 1 Lost Legion jet fighter
Kiss My Badass: Kill 5 Lost Legion badasses
ElementalSome Like it Hot: Deal 5000 damage with incendiary DoT effects
Watt's Up?: Deal 5000 damage with shock DoT effects
Frost Bite: Deal 5000 damage with cryo DoT effects
Out with a Bang: Kill 20 enemies with explosive damage
Toxic Takedown: Kill 20 enemies with corrosive damage
Way of the Enkindling: Light 25 enemies on fire
Chemical Burn: Deal 2500 damage with corrosive DoT effects
LootAaaaaand OPEN!: Open 10 treasure chests
Rare as Rocking Horse...: Loot or purchase 5 blue items
A Chunk of Purest Green: Loot or purchase 25 green items
Day for Every Occasion: Pick up or purchase 10 weapons
Scrounging Around: Open 50 lootable crates, lockers, and other objects
Purple Haze: Loot or purchase 3 purple items
The Happiest Color: Loot or purchase 1 orange item
Junkyard Dog: Loot or purchase 50 white items
Money and TradingImpulse Shopper: Buy 1 Item of the Day
Pawn Broker: Sell 50 items to vending machines
Mr. Money Pits: Collect 5000 dollars from cash drops
Mom Would Be Proud: Save 10000 dollars
Trade Negotiations: Trade 1 time with another player
Over the Moon: Purchase 25 items with Moonstones
VehicleFender Bender: Kill 5 enemies by ramming them with a vehicle
Improvise, Adapt, Overcome: Kill 10 enemies with a turret or vehicle-mounted weapon
Splat 'n' Slide: Kill 1 enemy by power-sliding over it in a vehicle
Road Warrior: Kill 5 enemies while in a vehicle
Pancakes for Breakfast: Kill 1 enemy with a Stingray slam
Health and RecoverySoup's Up: Get 1 second wind by killing an enemy with a corrosive DoT
Had a Bit of a Shocker: Get 1 second wind by killing an enemy with a shock DoT
There Can Be Only... Me: Get 1 second wind by killing a badass enemy
Doctor Feels Good: Recover 1000 health
Better You Than Me: Get 10 second winds by killing an ememy
Up Unt at Zem: Revive a co-op partner 5 times
The Phoenix: Get 1 second wind by killing an enemy with a burn DoT
Rollin' the Ice: Get 1 second wind by shattering a frozen enemy
GrenadesBig MIRV: Kill 10 enemies with MIRV grenades
Sprayowee: Kill 25 enemies with Area-of-Effect grenades
Home Nade Cookin': Kill 10 enemies with grenades
Betty Boom: Kill 10 enemies with Bouncing Betty grenades
Pass the Chianti: Kill 10 enemies with Transfusion grenades
See Ya on the Other Side: Kill 10 enemies with singularity grenades
ShieldsNova Say Die: Kill 5 enemies with a Nova shield
Amplitude Killuation: Kill 5 enemies while buffed by an Amplify shield
That'll Learn Ya: Kill 5 enemies with reflected damage from a Spike Shield
Wet Work: Kill 5 enemies while buffed by a Maylay shield
Ammo Eater: Absorb enemy ammo 20 times with an Absorption shield
Rocket LauncherMissile Magnet: Kill 5 enemies with direct hits from rocket launchers
Punker Buster: Kill 5 shielded enemies with one rocket each
Get a Rocket Up Ya: Kill 10 enemies with rocket launchers
Hand of God: Kill 25 enemies from long range with rocket launchers
Magic Missile: Get 2 second winds with rocket launchers
Collateral Damage: Kill 5 enemies with rocket launcher splash damage
Note: You must complete level 5 in Collateral Damage to "discover" Missile Magnet!
Sniper RifleCritical Reception: Kill 10 enemies with critical hits using sniper rifles
Windage Adjustment: Get 2 second winds with sniper rifles
Sharp Shooter: Kill 20 enemies with sniper rifles
Penetrating Wound: Kill 5 shielded enemies with one shot using sniper rifles
Melon Splitter: Get 25 critical hits with sniper rifles
Ol' Skool: Kill 5 enemies with sniper rifles without using the scope/ironsights
Clean and Simple: Kill 5 unaware enemies with sniper rifles
Assault RifleAssault with a Deadly Weapon: Kill 25 enemies with assault rifles
Assaulty Dog: Get 5 second winds with assault rifles
Hot Lead Injection: Kill 10 enemies with critical hits using assault rifles
Crouch Potato: Kill 25 enemies with assault rifles while crouched
Aim to Please: Get 25 critical hits with assault rifles
LaserBattle Star: Kill 10 flying enemies with laser weapons while in the air
Aggressive Lasik: Get 25 critical hits with lasers
Light 'em Up: Kill 10 enemies with critical hits using laser weapons
I See the Light: Get 2 second winds with laser weapons
Pew Pew: Kill 25 enemies with laser weapons
SMGBring the Pain: Get 25 critical hits with SMGs
Dinky Death Dealer: Kill 10 enemies with critical hits using SMGs
And Stay Down!: Get 2 second winds with SMGs
Nice Spray Job: Kill 25 enemies with SMGs
ShotgunShotgunning the Breeze: Get 2 second winds with shotguns
Hello Uncle Buckshot: Get 50 critical hits with shotguns
Take It All: Kill 10 enemies from point-blank range with shotguns
NOTE: You must complete level 5 in Take It All to "discover" Over Achiever!
Boomstick Boogie: Kill 25 enemies with shotguns
Over Achiever: Kill 10 enemies from long range with shotguns
Shotty Workmanship: Kill 10 enemies with critical hits using shotguns
PistolTrigger Happy: Kill 25 enemies with pistols
Pistoleer: Get 25 critical hits with pistols
Magnum Maestro: Kill 10 enemies with critical hits using pistols
Gunslinger: Kill 10 enemies shortly after entering ironsights with a pistol
Pistol Whipped: Get 2 second winds with pistols
MeleeMartial Marshal: Kill 25 enemies with melee attacks
Captain Cutty: Kill 20 enemies with melee attacks using bladed guns
General CombatProjectile Proliferation: Fire 5000 rounds
Barrel of Laughs: Kill 10 enemies with stationary barrels
One Man's Trash: Deal 5000 damage with Tediore reloads
Throw Me the Money: Kill 5 enemies with Tediore reloads
Comet Crash: Shatter 5 frozen enemies with falling damage
Ice to Meet You: Shatter 20 frozen enemies with weapons
Last Gasp: Kill 10 enemies by asphyxiation
Day of the Dead: Kill 250 enemies during the day
Executioner: Kill 20 enemies with critical hits
Action Hero: Kill 25 enemies using your Action Skill
Having Trouble Breathing?: Shatter 25 enemy oxygen masks
Dark Sider: Kill 25 enemies at night
MiscellaneousLittle on the Side: Complete 10 side missions
The Duelist: Win 1 duel
OC/DC: Complete 5 optional mission objectives
We Have a Contender: Complete 5 challenges
Specific adviceFor Grinders: I found these to be the most annoying challenges to complete. You need tons of white, green, and blue weapons to grind. You also need tons of Moonstones for Moonstone grinds and to help get Luneshine weapons.
I ended up exploiting a glitch and the save system to get enough resources to complete these challenges.
See my Lunar Looter solution for a glitch to get infinite Moonstones:
For getting enough weapons, I first collected four grindable sets. I had three blue pistols, three green pistols, three green lasers, and three white lasers. I gave these 12 weapons to a level 1 character on a second profile. I then copied that character from my HDD to a memory unit and to a USB flash drive. Next, I'd load a split screen game with my main character and one of the copies of the character from the second profile. I'd drop all the weapons, then bring in the other copied character and drop the weapons again. I'd then grind all those weapons with my main character. Then I'd dashboard, re-copy the character from the HDD to the memory units, and repeat the process. It was a little time consuming but the quickest method I could come up with. I probably could have sped up the process if I got some moonstones on the second profile character to expand his backpack so that he could hold more than 12 weapons.
For Vehicles:
Splat 'n' Slide: Kill 1 enemy by power-sliding over it in a vehicle
-This one was annoying. You power-slide in a vehicle with RB. You have to be moving somewhat sideways as you run over the enemy for it to count.